How to Fix a Faulty Mercedes ECU Mercedes ECM

If you’ve been following our blog, you know we spend a lot of time working with Mercedes ECU’s, Mercedes ECM’s, or engine control units or module. The Mercedes ECU or Mercedes ECM is a major component of your vehicle. It’s the onboard computer and it’s responsible for regulating your car’s engine. We often modify a Mercedes ECU/Mercedes ECM to help its engine run better, unlocking extra horsepower and torque (here’s one example of a recent C63s tune). However, we can also help if you’re having issues with a broken or Faulty Mercedes ECU / Mercedes ECM. We know the Mercedes ECU inside and out after spending years analyzing and repairing them. We can even provide a Virgin Mercedes ECU.

Common Signs of a Faulty Mercedes ECU Mercedes ECM

If you’re scratching your head because your vehicle is experiencing one of these common signs, you may have an issue with your ECU:

The Check Engine Light is on

Car won’t start and other common electrical components, like the battery and the starter, aren’t the problem

Unexplained poor performance or drops in fuel economy

Sudden jerking or stopping while shifting gears, even though you maintain your transmission properly

Fan running on High

Unexplained error codes when all components have been tested or replaced

Options for Mercedes ECU Repair or Replacement

It is important to properly diagnose a faulty ECU with computer diagnostic equipment. We offer a free diagnostic service at the PRESSERtech garage, and you don’t even have to be within driving distance to take advantage. We’ll ask you to ship us your ECU, and within 24 hours of receipt we’ll let you know if you need a repair and how much it will cost. We can fix it for you, or we can simply ship it back to you within 24 hours of your request. You’ll just pay for the shipping and handling for your ECU.

If you’ve already been to a dealership or another repair shop, you may have been told your ECU is broken or unreadable. Getting a new ECU at a dealership can be very expensive. Luckily, we can help and save you money. The dealership is not your only option for a new ECU. Even when other companies can’t communicate with the ECU, we can because we know what we’re doing.

Virgin Mercedes ECU’s

In most cases, we can remove the Driver Authorization System (DAS) and place it on a replacement ECU. If that is not possible, we can provide a virgin ECU just like a mechanic would order from Mercedes Benz. All the virgin ECU needs is a simple activation process using Mercedes Star/Xentry software. Ultimately, we can help you save hundreds, if not thousands of dollars that you would spend at a dealership.

We’ve Shipped ECU’s Across the Globe

We have provided virgin Mercedes ECU’s as well as fully programmed Mercedes ECU’s to individuals and shops all over the country, and shipped to more than 40 countries worldwide, from New Zealand, Sweden, Zambia to the Phillipines.. Even if you’re not local to the PRESSERtech garage, we can work with you and get your virgin ECU shipped to you, ready for your mechanic to install in your vehicle.

Give Us A Call

If you’re looking to repair or replace a faulty ECU, and would like to learn more about how we can help save you some money, give us a call at (770) 648-0500 or use our Contact Form. We look forward to speaking with you!

Mercedes C43 AMG Performance Tune – Huge Gains All Around

At Pressertech, we recently wrote about tuning the Mercedes C63 AMG — the “iron fist in an iron glove” — and how we were able to provide a 19% increase in horsepower and a 27% increase in torque with a Stage 2 tune. Today we’re looking at the C63’s little brother, the Mercedes C43 AMG Performance Tune. It’s been described as “balanced, competent, and just powerful enough to be exciting.”

Mercedes C43 AMG vs. Mercedes C63 AMG

The Mercedes C43 AMG sits in the Mercedes lineup between the Mercedes C63 AMG and the C300 coupe, making it an appealing middle ground between the two models. Instead of a V8, the Mercedes C43 AMG has a twin-turbo V6 (“one of the best sounding V6 engines out there”).The standard 4MATIC all-wheel drive makes for a ride that won’t drift as easy. It boasts balanced and composed suspension, and an overall better ride quality than the Mercedes C63 AMG. Tested on the autobahn, the Mercedes C43 AMG proved to be solid and confident, even at speeds upwards of 140 mph.

Mercedes C43 AMG Specs

At stock specs, the Mercedes C43 AMG brings 362 horsepower and 384 LBS-FT torque to the table. It’s a distinct upgrade in performance from the C300 coupe. At PRESSERtech, we have the ability to upgrade the C43 AMG to two levels through our comprehensive Mercedes Performance Tune. A Stage 1 Tune would bring this coupe to 403 horsepower & 441 LBS-FT torque. For even more power, a Stage 2 Tune would bring the C43 AMG to 413 horsepower and 464 LBS-FT torque. That is just amazing!

Mercedes C43 AMG Performance Tune Process

Mercedes Performance Tunes are a great way to boost the capability of your vehicle without having to replace any stock components. It’s a cost effective way to get more power out of the car you already own and love.

When tuning the C43 AMG, our expert technicians targeted the car’s engine control unit (ECU). After removing the ECU with extreme caution, we use our in-house technology to modify its stock settings. By modifying the ECU, we’re able to unlock the true potential of your vehicle’s engine. We’ll also keep your original Mercedes flash tune on file, so there should be no fear of trying out a tune on your car. If the tune isn’t to your liking, we can always modify it or change it back.

Mercedes C63 AMG Performance Results

When we tune a Mercedes, we see better throttle response, increased efficiency through all loads and gains all around. For this Mercedes C43 AMG Coupe, a Stage 2 Tune provided a stunning boost of 51 more horsepower and 80 more LBS-FT torque. That’s a 14% increase in horsepower and a 20% increase in torque. It’s incredible to see what kind of performance upgrade can be achieved simply through tweaks to a car’s ECU, without making other expensive upgrades and being perfectly safe with all stock components.

Give Pressertech A Call

If you’re thinking about a Mercedes Performance Tune, give us a call at (770) 648-0500 or use our Contact Form. We’re happy to chat with you about what a performance tune can do for your vehicle.

Do you have a Faulty Mercedes EIS ESL? The Mercedes EIS ESL Electronic Ignition Switch and Electronic Steering Lock system exists to make sure your car isn’t stolen. Your key has a sequential code, unique to your vehicle, and when inserted into the ignition, your car runs a series of tests, to make sure it’s the right key. Three control units (EIS, ESL and ECU) must all agree the key is correct before the “Turn and Start” function is authorized. If the key and the EIS don’t match up, “Turn and Start” is deactivated. Thieves foiled. Great in theory, right? But, a faulty Mercedes electronic ignition switch wills top you in your tracks.

Issues You May Experience with the Mercedes EIS ESL Electronic Ignition Switch and Electronic Steering Lock

You might be at the end of your rope wondering why your car won’t start. Some common issues that you may experience due to a faulty Mercedes EIS or ESL:

Car won’t start

Can’t turn key in the electronic ignition switch eis

Can turn key, car won’t start

Car won’t start when cold

When the Mercedes Electronic Ignition Switch EIS Goes wrong

Faulty Mercedes EIS ESL? Mercedes Electronic Ignition Switch EIS ESL system falters, “Turn and Start” will deactivate and you won’t be able to start your car. It’s your car’s security system doing its job, but not because of a mismatched key, because of a communication breakdown in one of the control units. Unfortunately, the EIS can go bad because of some common problems, and your dealer may tell you the only option is a costly ESL replacement.

Some of the common reasons an EIS might falter:

A power surge

Low battery

Performing a jump while the key is inserted

Electronic Steering Lock ESL Fails or locks in place

Does My Mercedes Model Have an EIS?

Do you have a Faulty Mercedes EIS ESL? We have found that this is a widespread issue, and it is causing frustration for many Mercedes drivers. Any of the following Mercedes chassis will likely have an EIS: W164 – W204 – W209 – W211 – W212 – C215 – W219 – W220 – W221 – R230.

Repairing the EIS, Replacing the ESL

We can test and repair your Faulty Mercedes EIS ESL and return it so you can simply plug and play. As for the Electronic Steering Lock or ESL, we can provide a permanent replacement that you only need to do once. We’ll replace the steering lock with an emulator. It bolts into the exact location as the lock. The car now thinks it has a steering lock because it is programmed the same as a regular steering lock. No more problems, ever!

Sending Us Your ESL Mercedes electronic ignition

If you’re not within close driving distance to our garage, you can send us your ESL. We’d recommend you have your local mechanic to get your steering lock removed. Many times a mechanic will have to cut out the lock when locked in place.

New Keys for your Mercedes-Benz

When we’re repairing your steering lock, don’t forget to ask us about additional keys. We can provide brand new keys fully programmed to your vehicle. You will be happy knowing that they are a fraction of the cost of the dealer.

Contact Us

As always, we’re happy to answer any questions you have. Please don’t hesitate to give us a call at (770) 648-0500 or use our contact form. We know this can be a frustrating issue. You should research all of your options before potentially spending thousands of dollars at the dealership.

Faulty Mercedes EIS ESL Key Replacement Solution was last modified: December 5th, 2017 by Customer Service

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About Pressertech

Pressertech is known for excellence in Performance Tuning. Each tune being individual to your specific vehicle. We're also experts in ECU Repair and Replacement so when its time for a Performance Tune or ECU replacement, choose the Performance Experts.